Home / 27,839.69-38,417.86-15,900.49

Finding the Fourth Proportional to 27,839.69, 38,417.86 and 15,900.49

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Solution

The fourth proportional to 27,839.69, 38,417.86 and 15,900.49 is: 21,942.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,839.69 : 38,417.86 = 15,900.49 : x
  2. Step 2: Convert to fraction form
    27,839.69/38,417.86 = 15,900.49/x
  3. Step 3: Cross multiply
    27,839.69x = 38,417.86 × 15,900.49
  4. Step 4: Simplify right side
    27,839.69x = 610,862,798.75
  5. Step 5: Solve for x
    x = 610,862,798.75/27,839.69
  6. Step 6: Final answer
    x = 21,942.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.